Machine for sharpening planer-blades.



F. W. WARDWELL, JR. MACHINE FOR SHARPENING PLANER BLADES.

APPLICATION FILED APR.20,19I4.

Patented Feb. 15, 1916.

3 SHEETSSHEET 1.

5 K W 4 w WW m 1 y 5 m s /.V m@ M6 F. W. WARDWELL, JR.

MACHINE FOR SHARPENING PLANER BLADES.

APPLICATION FILED APR.20, I914.

1,172,1 83. Patented Feb. 15, 1916.

3 SHEETSSHEET 2- F. W. WARDWELL, JR.

MACHINE FOR SHARPENING PLANER BLADES.

APPLICATION FILED APR.20, l9l4.

1,172,183. Patented Feb. 15, 1916.

3 SHEETSSHEET 3.

VI '1- W a H 3 W fi H 1 D 7' g P I 0 O 1 H v I!- 0 1r I 4 7325725. /NVEN 70R FRANK WELLINGTON WARDWELL, JR., OF CLEVELAND, OHIO.

MACHINE FOR SHARPENING PLANER-BLADES.

Specification of Letters Patent.

Patented Feb. 15, 1916.

Application filed April 20, 1914. Serial No. 833,801.

To all whom it may concern:

Be it knownthat I, FRANK WELLINGTON WARDWELL, J r., citizen ofthe'United States, residing at Cleveland, in the county of Cuyahogaandst ate of Ohio, have invented certain new and useful Improvements inMachines for Sharpening Planer-Blades, of which the following is aspecification.

This invention consists in a machine for sharpening planer blades, allsubstantially as shown and described and particularly pointed out in theclaims.

In the accompanying drawings, Figure 1 is a perspective view of themachine complete. Fig. 2 is a sectional plan view with a portion of thebase broken away and corresponding to a horizontal line axially throughthe two horizontal supporting tubes. Fig. 3 is a detail of the immediategrinding attachment showing the same in elevation and sectioned axiallythrough the grinder and the axis thereof. Fig. 4 is an end elevation ofthe machine, looking in from the left of 1. Fig. 5 is a sectional viewcentrally lengthwise of the near supporting tube in Fig. 1.

The grinder or sharpener for the planer or other blade to be sharpenedis indicated by G,and the mechanism shown is intended to be .removablymounted on the planer bed with the grinder in-adjustable workingrelations with the planer blades so that perfectly true sharpeningresults may be obtained continuously from end to end of each singleblade or the several blades on a single cutter head. To these severalends grinder G is carried by a vertically disposed shaft S in directactuating relations with an electric motor I, and said parts aresupported together on or by means of a head H mounted to travel or slideon the guide baror plate P. The said bar or plate is supported at ornear its ends on the two supporting tubes D and D which are horizontallymounted upon the two tubular standards or posts C by means of brackets Zslidably mounted on said standards. The standards C are rigidlysocketedin the base B and serve as rigid guide members for the saidbrackets inany vertical adjustment of said brackets and the tubes D andD thereon. The brackets b are right angled parts and have a clampedrelation to both the standards C and the cross pipes or tubes D and D.less the fact that said brackets are slidably mounted on said standardsunder actuation through the cross connecting plate or member F whichrigidly unites said brackets b andhas nuts n fixed on the face thereoffor the pair of screws m. A top plate L connects the upper ends of thesaid standards and has bearings 2 on its bottom for the screws m and acentral bearing for the operating shaft M. The said shaft also passesthrough a lug n on plate F and occupies the central of'three bearings 2on the base B, and other two bearings being occupied by the ends of theadjusting screws m. The parts B, C and L practically constitute theframe of the machine and all the other parts are supported thereon ortherefrom and are movable in respect thereto. Each of the said adjustingscrews has a gear 3 on its lower extremity in mesh with a pinion 4 onshaft N beneath base B, and the said gears 3 are alike in size andfunction and serve to give primary or initial position and relation tothe grinder G. Such position or adjustment of the parts is accomplishedby raising or lowering the brackets 15 and the carrying tubes D and D onthe standards C. F iner-ad justment of the said grinder is more localand comprises means for setting the grinder or the bar carrying the sameso that the grinder will work accurately on the same level its entirelength of travel and from blade to blade on the planer. Thus, thegrinder G is carried by'the two-part shaft S driven by the motor M andsupported in a vertically disposed tubular bearing 5 rigid with bracketH and having alength nearly equal to the length of shaft S so as tosteady the same. said shaft is, however, allowed a slight measure ofaxial play under domination ofthe spring 7, which has uniform tensionand serves to hold the grinder down to effective work. The said shaft Sis therefore made in two parts interlocked, one of which is fixed in thegrinder and the other in the motor and the joint provides for positiveactuation and is located beneath said spring.

In the finer adjustments of the grinder above referred to I have in mindthe fixed relation of guide-bar or plate P in respect to transversetubeor pipe D and such adjustment of said plate upon or in respect to thepipe or tube D as will afford a limited adjustment thereon for levelingpurposes. This is accomplished by the means seen in Fig. 5, wherein thesaid plate is shown as secured to the tube D by a tie rod extending Thelower portion or section of lengthwise through the tube and threadedinto a stud 9 which hasa head bearingagainst the outside of the saidplate. A thimble 10 is placed on the said stud and a box 12 threaded onthe end of the tube D overlaps said thimble and set screws 14, top andbottom, are inserted through said box and bear on said thimble and serveto make such limited adjustment as the said plate may require to fix itsworking level. The exact level at any time can be read by the indexfinger 15 on the indices 16 on box 12, see Figs. 3 and 4. Plate P isrigidly afiixed to tube D and this tube turns in its bracket b andpermits the said plate to be raised or lowered at its connecting pointwith the other tube D. The head H which carries the motor on plate P hasribs 17 or theirequivalent engaging the edges of said plate. In machinesof this general kind absolute steadiness and uniformity in the work isof the first importance, and any tremor or chattering or yielding in thegrinding parts other than provided for is detrimental. The presentmachine is therefore built rigid and strong and the different parts allparticularly related as shown so as to insure absolute stability ofstructure and uniformity in operation. The slight adjustments throughbox 12, and axial yieldin the grinder shaft conserve the operations inthese particulars, while the primary adjustment through the two screws-m..fix the position of the grinder G in the main. A hand crank [a onactuating shaft N serves to turn the same and to rotate the screws msimultaneously. Bed plate B is adapted to be fixed in workingpositionupon the planer by bolts entered through the several slots 18 therein.The head H which carries the electric motor and the horizontallydisposed tubes mounted in said brackets, in combination with means toraise and lower said brackets and tubes comprising a pair of screwssupported between said standards and having fixed nuts in the plateconnecting the said brackets and means to rotate said screwssimultaneously.

3. In a machine for sharpening planer blades, a horizontally disposedguide-bar having a fixed support at one end and an adjustable support atthe other end adapted to fix said bar at different levels, incombination with a motor and a sharpening device operatively connectedand means supporting the same in a traveling relation on said bar.

4. In a machine as described, a set of horizontally disposed supports, aguide bar pivotally supported at one end by one of said supports andmeans connected with the other support to level. said bar, said meanscomprising a stud engaging said bar againstadapted to fix the horizontalposition of the bar.

5. In a machine as described, a pair of laterally disposed supports anda guide bar mounted on the free ends of said supports, in combinationwith leveling means at one end of, said bar comprising a screw rodthrough the corresponding support and a stud having a head bearing onsaidbar engaged by said screw, 2. thimble on'the neck of said studinside said bar, a box on said support and leveling screws top andbottom through said box having hearings on said thimble.

In testimony whereof I afiix my signature in presence of two witnesses.

FRANK WELLINGTON WARDWELL, JR. Witnesses:

R. B. Moses, B. C. TAYLOR.

